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Iterative Alignment issue

Shadowpaw
I have a part I have to do a iterative alignment on but the print only has 3A,1B, & 1C targets. The rotation is just 1 point on the top of the part on a plane lined up to the centerline of a cylinder on the opposite side. The plane is also called out as the B datum for a True position. Documents are controlled so I can't share it but is there anyway to rotate with only 1 target before I tell them they need to fix the print?

Thanks
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  • By the looks of your sketch, I would simply switch B and C.
    -Level to A axis(5 hit cylinder)
    -Rotate to a 2d perp line 'ray line' from a axis to C
    -Origin XY to A axis
    -Origin Z to B
    iterate
  • in reply to louisd
    Your initial alignment (which most take advantage of iterative at this point) is solely to "Find" the part within the machine's volume.
    I had to dumb it down to my customer once: Initial-Aligning the machine to the part, is like telling someone what table a calibrated/leveled scale is on within a room.
    The part datum alignment is where the scale's bubble-leveling occurs.

    Refined measurement of datums in my opinion should not be an iterative approach.
    You should have all six degrees of freedom controlled and the part "found" using iterative align...
    --Then measure your datums with known accurate vectors.
Reply
  • in reply to louisd
    Your initial alignment (which most take advantage of iterative at this point) is solely to "Find" the part within the machine's volume.
    I had to dumb it down to my customer once: Initial-Aligning the machine to the part, is like telling someone what table a calibrated/leveled scale is on within a room.
    The part datum alignment is where the scale's bubble-leveling occurs.

    Refined measurement of datums in my opinion should not be an iterative approach.
    You should have all six degrees of freedom controlled and the part "found" using iterative align...
    --Then measure your datums with known accurate vectors.
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